Evaluating the Effect of Some Biotic Insecticides on Palm Dubas (Ommatissus lybicus Bergevin Berg. )

Seven treatments were applied to control palm dubas, using CRBD in two experiments on Degla noor cultivar of ten years old date palm trees in aqaba-Jordan. chemicals were used as follows : Cascade, Sun oil (mineral oil ), Fytoclean, detergent, detergent with Alfastar, Alfastar and control with no application. Results indicated that all treatments were significantly killing dubas insects . However, the effect of Alfastar with the detergent was the highest treatment in killing the palm dubas after a day from application although there were significantly differences effects of Fytoclean and sun oil. After seven days, all treatments were significantly different with preferably to Faytoclean in killing eggs of dubas and with Cascade in killing nymphs and adults of dubas. This effect remains for 40 days with preferably to Cascade in killing the adults and the Fytoclean in killing nymphs and Alfastar with detergent in killing eggs of dubas. On the other hand, the Alfastar had a negatively significant effect on lace wings eggs.